US20230220914A1 - Gasket - Google Patents

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Publication number
US20230220914A1
US20230220914A1 US18/093,898 US202318093898A US2023220914A1 US 20230220914 A1 US20230220914 A1 US 20230220914A1 US 202318093898 A US202318093898 A US 202318093898A US 2023220914 A1 US2023220914 A1 US 2023220914A1
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United States
Prior art keywords
split component
gasket
core body
mating
split
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US18/093,898
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English (en)
Inventor
Kazunori EDAHIRO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uchiyama Manufacturing Corp
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Uchiyama Manufacturing Corp
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Filing date
Publication date
Application filed by Uchiyama Manufacturing Corp filed Critical Uchiyama Manufacturing Corp
Assigned to UCHIYAMA MANUFACTURING CORP. reassignment UCHIYAMA MANUFACTURING CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EDAHIRO, KAZUNORI
Publication of US20230220914A1 publication Critical patent/US20230220914A1/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/067—Split packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces

Definitions

  • the present disclosure relates to an annular gasket that is used to seal a gap between opposed surfaces of two members.
  • annular gasket is conventionally known which is interposed between opposed surfaces of a heat exchanger cover and a heat exchanger of, or between opposed surfaces of a cylinder block and an oil pan of, an internal combustion engine, and fastens the two members together to seal a gap between the opposed surfaces of the two members.
  • Annular gaskets disclosed in U.S. Pat. No. 5,618,047 and JP-A-2010-133477 are known.
  • ends of two split components that have been mated together are joined to form an annular shape.
  • An elastic sealing layer is adhered integrally to the inner peripheral surface of the annular unit.
  • the two split components that have been mated together form a joint portion.
  • An elastic material that has been poured into the joint portion is cured. The two split components joined in this manner forms the annular unit.
  • one metal sheet is stamped into an annular shape to obtain a whole annular unit.
  • the internal part of the annular unit is discarded as scrap in many cases.
  • a gasket includes an annular unit having a plurality of assembled split components as disclosed in U.S. Pat. No. 5,618,047 and JP-A-2010-133477 above, the plurality of split components can be stamped from one metal sheet in the manufacturing of the gasket. Hence, the amount of waste material produced from one metal sheet is reduced. As a result, production yield increases.
  • An annular gasket for sealing a gap between opposed surfaces of two members, including: a core body including a plurality of split components; a sealing unit fixed to the core body; and an elastic member.
  • ends of the plurality of split components are mated together in such a manner as to have a gap between the ends, the ends mated together are joined by the elastic member, and edges of the joined ends are inclined relative to a longitudinal direction of the split components in plan view.
  • FIG. 1 A is a schematic plan view of a gasket according to one embodiment of the present disclosure
  • FIG. 1 B is a schematic enlarged view of part A of FIG. 1 A ;
  • FIG. 1 C is a schematic enlarged view of part B of FIG. 1 A ;
  • FIG. 2 A is a cross-sectional view along X-X′ in FIG. 1 B ;
  • FIG. 2 B is a cross-sectional view along X-X′ in FIG. 1 B of the gasket of FIG. 1 A with a gap between opposed surfaces of two members sealed;
  • FIG. 3 A is a schematic enlarged view illustrating a modification of part A of FIG. 1 A ;
  • FIG. 3 B is a schematic enlarged view illustrating a modification of part C of FIG. 1 A ;
  • FIG. 4 A is a schematic plan view of a gasket according to one modification.
  • FIG. 4 B is a schematic plan view of a gasket according to another modification.
  • the joint portion is formed along a longitudinal direction of the split components, and a width direction perpendicular to the longitudinal direction. Hence, rigidity against bending in the longitudinal direction, or rigidity in the width direction may be insufficient.
  • an object of the present disclosure is to provide an annular gasket including a plurality of split components that can improve flexural rigidity.
  • an annular gasket for sealing a gap between opposed surfaces of two members, the gasket including: a core body including a plurality of split components; a sealing unit fixed to the core body; and an elastic member.
  • ends of the plurality of split components are mated together in such a manner as to have a gap between the ends, the ends mated together are joined by the elastic member, and edges of the joined ends are inclined relative to a longitudinal direction of the split components in plan view.
  • the gasket according to the embodiment has the above-mentioned configuration.
  • the gasket includes the plurality of split components that can improve flexural rigidity.
  • a gasket 1 includes a core body 2 including a plurality of split components, a sealing unit 3 fixed to the core body 2 , and an elastic member 6 .
  • the gasket is an annular gasket that seals a gap between opposed surfaces 40 and 50 ( FIG. 2 B ) of two members.
  • the configuration of the core body 2 is not particularly limited.
  • the core body 2 is simply required to include the plurality of split components obtained by splitting the core body.
  • the core body 2 of the gasket 1 illustrated in FIGS. 1 A to 1 C and FIGS. 2 A and 2 B includes a first split component 2 A and a second split component 2 B.
  • ends of the first split component 2 A are mated to ends of the second split component 2 B in such a manner as to have gaps respectively between the ends.
  • First mating portions 21 A and second mating portions 21 B which are configured in this manner, are joined together by the elastic member 6 .
  • the gasket 1 is formed into an annular shape.
  • the gasket 1 includes the sealing unit 3 .
  • the sealing unit 3 is fixed to the core body 2 , and is in an elastically deformed form. In this manner, the sealing unit 3 can seal the gap between the opposed surfaces 40 and 50 of the two members.
  • An edge 21 a of each of the first mating portions 21 A is configured in such a manner as to be inclined relative to a longitudinal direction of the first split component 2 A in plan view.
  • an edge 21 b of each of the second mating portions 21 B is configured in such a manner as to be inclined relative to a longitudinal direction of the second split component 2 B in plan view.
  • the two members sealed by the gasket 1 placed between the opposed surfaces 40 and 50 are a first member 4 and a second member 5 in the embodiment.
  • the first member 4 is placed in such a manner as to cover the second member 5 from above.
  • Examples of the first member 4 and the second member 5 include a heat exchanger cover and a heat exchanger of, and a cylinder block and an oil pan of an internal combustion engine.
  • the gasket 1 has a shape that fits the shape of the opposed surface 40 of the first member 4 and the shape of the opposed surface 50 of the second member 5 in plan view of the gasket 1 illustrated in FIG. 1 A .
  • the gasket 1 includes the core body 2 formed into an annular shape, and the sealing unit 3 fixed to the core body 2 .
  • the core body 2 includes the two split components 2 A and 2 B, more specifically, the first split component 2 A and the second split component 2 B.
  • the first split component 2 A and the second split component 2 B are mated together in such a manner as to have the gaps respectively between the ends of the first split component 2 A in the longitudinal direction in plan view and the ends of the second split component 2 B in the longitudinal direction in plan view.
  • the ends, in the longitudinal direction, of the first split component 2 A that is mated in such a manner as to have the gaps are referred to as the first mating portions 21 A.
  • the ends, in the longitudinal direction, of the second split component 2 B, the ends facing the first mating portions 21 A, are referred to as the second mating portions 21 B.
  • the elastic member 6 is poured into the gaps between the first mating portions 21 A and the second mating portions 21 B.
  • the first mating portions 21 A and the second mating portions 21 B are bonded together by the vulcanized elastic member 6 .
  • the core body 2 is formed into an annular shape.
  • the molded and vulcanized elastic member 6 allows the annular sealing unit 3 to be fixed to and formed integrally with an inner peripheral surface 24 of the core body 2 .
  • an inner peripheral surface 24 a of the first split component 2 A and an inner peripheral surface 24 b of the second split component 2 B form the inner peripheral surface 24 of the annular core body 2 .
  • an outer peripheral surface 25 a of the first split component 2 A and an outer peripheral surface 25 b of the second split component 2 B form an outer peripheral surface 25 of the annular core body 2 .
  • the first split component 2 A and the second split component 2 B are formed by stamping a rigid metal sheet such as a cold rolled steel sheet or a stainless steel sheet.
  • a rigid metal sheet such as a cold rolled steel sheet or a stainless steel sheet.
  • One of the first mating portions 21 A illustrated in part A of FIG. 1 A and FIG. 1 B , including the edge 21 a is inclined linearly relative to the longitudinal direction of the first split component 2 A in plan view at an angle ⁇ 1 (hereinafter referred to as “angle of inclination” as appropriate) in such a manner as not to be parallel to and perpendicular to the longitudinal direction.
  • One of the second mating portions 21 B that faces the one of the first mating portions 21 A via the gap, including the edge 21 b , is formed with a predetermined angle of inclination in such a manner as to be substantially parallel to the one of the first mating portions 21 A.
  • the other first mating portion 21 A illustrated in FIG. 1 C is inclined linearly at an angle ⁇ 2 being a different angle from ⁇ 1 in such a manner as to intersect the longitudinal direction of the first split component 2 A in plan view.
  • the other first mating portion 21 A faces the other second mating portion 21 B via the gap.
  • the other second mating portion 21 B, including the edge 21 b is formed with a predetermined angle of inclination in such a manner as to be substantially parallel to the other first mating portion 21 A.
  • the one of the first mating portions 21 A and the one of the second mating portions 21 B are formed in such a manner as to be inclined upward to the left in the page of FIGS. 1 A and 1 B .
  • the other first mating portion 21 A and the other second mating portion 21 B are formed in such a manner as to be inclined upward to the right in the page of FIGS. 1 A and 1 C .
  • the one of the first mating portions 21 A and the one of the second mating portions 21 B, and the other first mating portion 21 A and the other second mating portion 21 B are formed in such a manner as to be inclined in the different directions from each other.
  • a stepped-down portion 22 A is formed at one end of each of a top surface 200 A and an undersurface 201 A of the first split component 2 A in a width direction of the first split component 2 A in such a manner that the one end is cut inward in a thickness direction of the first split component 2 A.
  • a stepped-down portion 22 B is also similarly formed at one end of each of a top surface 200 B and an undersurface 201 B of the second split component 2 B in a width direction of the second split component 2 B in such a manner that the one end is cut inward in a thickness direction of the second split component 2 B.
  • the stepped-down portions 22 A and 22 B are provided on the inner peripheral surface 24 of the first split component 2 A and the second split component 2 B. Moreover, the first split component 2 A and the second split component 2 B are provided with a plurality of bolt holes 23 ( FIG. 1 A ) for assembling the gasket 1 to the first member 4 and the second member 5 with bolts being fasteners.
  • the first split component 2 A and the second split component 2 B are joined together by the elastic member 6 that is in the gaps of approximately one mm provided between the first mating portions 21 A and the second mating portions 21 B.
  • a width dimension of the first split component 2 A and the second split component 2 B in areas without the bolt holes 23 is approximately five mm.
  • the width dimension of the first split component 2 A and the second split component 2 B is five mm, if a dimension of the gap between the each of the first mating portions 21 A and the each of the second mating portions 21 B is equal to or greater than one mm, position tolerance of the mating of the first split component 2 A and the second split component 2 B can be absorbed.
  • the dimension of the gap between the each of the first mating portions 21 A and the each of the second mating portions 21 B can be set as appropriate according to the width dimension of the first split component 2 A and the second split component 2 B.
  • the annular sealing unit 3 formed of an elastic member is fixed along the inner peripheral surface 24 of the core body 2 that has been formed into an annular shape with the first split component 2 A and the second split component 2 B.
  • the sealing unit 3 is fixed to the core body 2 in such a manner as to reach the stepped-down portions 22 A of the first split component 2 A and the stepped-down portions 22 B of the second split component 2 B, which prevents the sealing unit 3 from being detached from the core body 2 .
  • the sealing unit 3 is a member that deforms elastically and seals the gap between the opposed surface 40 of the first member 4 and the opposed surface 50 of the second member 5 . As illustrated in FIG.
  • annular protrusion 30 is formed into an annular shape along a circumferential direction of the sealing unit 3 at each end of the sealing unit 3 in a thickness direction thereof.
  • the annular protrusions 30 protrude further outward in the thickness direction than the top surface 200 A and the undersurface 201 A of the first split component 2 A.
  • the annular protrusions 30 protrude further outward in the thickness direction than the top surface 200 B and the undersurface 201 B of the second split component 2 B.
  • the annular protrusions 30 have an approximately semicircular shape in vertical cross section in a natural state.
  • a groove portion 31 recessed inward in the thickness direction is annularly formed along each of the annular protrusions 30 and outward of the each of the annular protrusions 30 .
  • a top surface portion 32 located on an inner peripheral side of the annular protrusion 30 is formed in such a manner as to be located further inward in the thickness direction than the top surface 200 A of the first split component 2 A and the top surface 200 B of the second split component 2 B.
  • an undersurface portion 33 located on the inner peripheral side of the annular protrusion 30 is formed in such a manner as to be located further inward in the thickness direction than the undersurface 201 A of the first split component 2 A and the undersurface 201 B of the second split component 2 B.
  • the gasket 1 is interposed between the opposed surface 40 of the first member 4 and the opposed surface 50 of the second member 5 . Therefore, the annular protrusions 30 deform elastically, moving toward the groove portions 31 , the top surface portion 32 , and the undersurface portion 33 . In this manner, the annular protrusions 30 are in a compressed state between the opposed surface 40 of the first member 4 and the opposed surface 50 of the second member 5 . As a result, the gap between the opposed surface 40 of the first member 4 and the opposed surface 50 of the second member 5 is sealed.
  • the elastic member 6 is poured into the gaps between the first mating portions 21 A and the second mating portions 21 B.
  • the elastic member 6 and the sealing unit 3 are molded and vulcanized by use of the same elastic member.
  • Examples of the elastic member used here include rubber materials such as EPDM, NBR, H-NBR, ACM, AEM, and FKM.
  • the first mating portions 21 A and the second mating portions 21 B are configured in such a manner as to be inclined relative to the longitudinal direction of the first split component 2 A and the second split component 2 B in plan view.
  • the edges 21 a and 21 b prevent the core body 2 from being bent and deformed, in the longitudinal direction and the width direction, from the first mating portions 21 A and the second mating portions 21 B. Therefore, the flexural rigidity of the core body 2 against bending in the longitudinal and the width direction improves.
  • the mating portions 21 A and 21 B are formed in such a manner as to be inclined linearly.
  • first split component 2 A and the second split component 2 B it is easy to manufacture the first split component 2 A and the second split component 2 B. Moreover, highly accurate positioning is not required to mate the first mating portions 21 A of the first split component 2 A to the second mating portions 21 B of the second split component 2 B. Furthermore, upon mating, it is also possible to absorb a tolerance.
  • the one of the first mating portions 21 A illustrated in part A of FIG. 1 A and the one of the second mating portions 21 B illustrated in FIG. 1 B , and the other first mating portion 21 A illustrated in part B of FIG. 1 A and the other second mating portion 21 B illustrated in FIG. 1 C are inclined in the different directions from each other.
  • the other mating portion 21 A or the other second mating portion 21 B resists bending in the same direction as the one of the first mating portions 21 A or the one of the second mating portions 21 B.
  • the flexural rigidity of the core body 2 can be improved as compared to a case where the one of the mating portions 21 A and the one of the mating portions 21 B and the other mating portion 21 A and the other mating portion 21 B are inclined in the same direction.
  • first mating portions 21 A′ and one of second mating portions 21 B′ are modifications of the one of the first mating portions 21 A and the one of the second mating portions 21 B, which are illustrated in part A of FIG. 1 A and FIG. 1 B .
  • the first mating portion 21 A′ and the second mating portion 21 B′, which are illustrated in FIG. 3 A are formed in such a manner as to include portions that meander in plan view (hereinafter referred to as the “meandering portions”) 26 a and 26 b .
  • An inner edge 210 a of the one of the first mating portions 21 A′ is connected to the inner peripheral surface 24 a of the first split component 2 A.
  • the edge 210 a is inclined at an angle ⁇ 3 relative to the longitudinal direction of the first split component 2 A in plan view in such a manner as not to be parallel to and perpendicular to the longitudinal direction.
  • An outer edge 211 a of the one of the first mating portions 21 A′ is connected to the outer peripheral surface 25 a of the first split component 2 A.
  • the edge 211 a is inclined at an angle ⁇ 4 different from ⁇ 3 relative to the longitudinal direction of the first split component 2 A in plan view in such a manner as not to be parallel to and perpendicular to the longitudinal direction.
  • the inner edge 210 a and the outer edge 211 a are formed at different positions in the longitudinal direction of the first split component 2 A.
  • the inner edge 210 a and the outer edge 211 a are linked by the meandering portion 26 a .
  • the meandering portion 26 a is formed in such a manner as to extend in the longitudinal direction of the first split component 2 A.
  • a plurality of protrusions and recesses is formed in a width direction of the first split component 2 A.
  • An inner edge 210 b , the meandering portion 26 b , and an outer edge 211 b are formed in such a manner that a gap of a predetermined spacing is formed between the one of the second mating portions 21 B′ that faces the one of the first mating portions 21 A′, and the one of the first mating portions 21 A′ when the two mating portions are mated together.
  • the first mating portions 21 A′ and the second mating portions 21 B′ are joined by an elastic member. As a result, the annular core body 2 is formed.
  • the first mating portion 21 A′ and the second mating portion 21 B′ of the modification are modifications of the one of the first mating portions 21 A and the one of the second mating portions 21 B, which are illustrated in part A of FIG. 1 A and FIG. 1 B .
  • the first mating portion 21 A′ and the second mating portion 21 B are formed in such a manner as to include the meandering portions 26 a and 26 b , which makes the core body 2 resistant to bending from the first mating portions 21 A′ or the second mating portions 21 B′. Hence, it is possible to encourage a further improvement in the flexural rigidity of the core body 2 .
  • the other first mating portion 21 A and the other second mating portion 21 B which are illustrated in part B of FIG. 1 A and FIG.
  • the angle of inclination of the other inner edges 210 a and 210 b connected to the inner peripheral surface 24 of the core body 2 , and the angle of inclination of the other outer edges 211 a and 211 b connected to the outer peripheral surface 25 of the core body 2 are desirably different from both of the angles of inclination ⁇ 3 and ⁇ 4 illustrated in FIG. 3 A .
  • the edges have different angles of inclination from those of the remaining edges, which makes the core body 2 resistant to bending deformation that starts from each mating portion. Hence, it is possible to encourage a further improvement in the flexural rigidity of the core body 2 .
  • a bolt hole 23 ′ illustrated in FIG. 3 B is a modification of the bolt hole 23 illustrated in part C of FIG. 1 A .
  • the bolt hole 23 ′ of FIG. 3 B is formed by a first mating portion 21 A′′ and a second mating portion 21 B′′ that are joined together by an elastic member. Both of the mating portions are mated together in such a manner as to have a gap between an end of the first split component 2 A and an end of the second split component 2 B.
  • the first mating portion 21 A′′ and the second mating portion 21 B′′ are configured in such a manner as to include semicircular recesses 23 ′ a and 23 ′ b , respectively.
  • the circular bolt hole 23 ′ is formed along edges of the recesses 23 ′ a and 23 ′ b by use of the fixed elastic member.
  • the inner edge 210 a connected to the inner peripheral surface 24 a of the first split component 2 A, and the outer edge 211 a connected to the outer peripheral surface 25 a of the first split component 2 A are configured in such a manner as to have approximately the same angle of inclination and be located on substantially the same line.
  • the inner edge 210 b and the outer edge 211 b of the second mating portion 21 B′′ are also configured in such a manner as to have approximately the same angle of inclination and be located on substantially the same line.
  • a gap of a predetermined spacing is formed between the inner edge 210 a of the first mating portion 21 A′′ and the inner edge 210 b of the second mating portion 21 B′′.
  • a gap of the predetermined spacing is formed between the outer edge 211 a of the first mating portion 21 A′′ and the outer edge 211 b of the second mating portion 21 B′′.
  • mating portions are not formed in an area corresponding to part A of FIG. 1 A .
  • the other configuration of the gasket 1 of the modification is substantially the same as the first embodiment.
  • the bolt hole 23 other than the bolt hole 23 ′ formed by the first mating portion 21 A′′, the second mating portion 21 B′′, and the elastic member has a configuration similar to the first embodiment.
  • the bolt hole 23 ′ has flexibility due to the elastic member.
  • the position where the other first mating portion 21 A and the other second mating portion 21 B are provided is not limited to the position illustrated in part B of FIG. 1 A , or FIG. 1 C . Any of the bolt holes 23 illustrated in FIG.
  • the inner edges 210 a and 210 b are desirably formed in such a manner as to have different angles from the angle of inclination ⁇ 3 illustrated in FIG. 3 A and be inclined in different directions.
  • the outer edges 211 a and 211 b are desirably formed in such a manner as to have different angles of inclination from the angle of inclination ⁇ 4 illustrated in FIG. 3 A , and be inclined in different directions.
  • the configuration of the sealing unit 3 is not limited to the structure of the sealing unit 3 used in the first embodiment illustrated in FIGS. 1 A to 1 C and FIGS. 2 A and 2 B , either.
  • the sealing unit 3 may be formed into an annular shape in such a manner as to be fixed to the outer peripheral surface 25 of the core body 2 as illustrated in FIG. 4 A .
  • the stepped-down portion 22 A is provided on the outer peripheral surface 25 a side of the top surface 200 A of the first split component 2 A in such a manner that the outer peripheral surface 25 a side is cut inward in the thickness direction of the first split component 2 A.
  • the stepped-down portion 22 B is provided on the outer peripheral surface 25 b side of the top surface 200 B of the second split component 2 B in such a manner that the outer peripheral surface 25 b side is cut inward in the thickness direction of the second split component 2 B.
  • the annular sealing unit 3 may be formed in such a manner as to pass through approximately the center in the width direction of the first split component 2 A and the second split component 2 B as illustrated in FIG. 4 B . Also in this case, the annular protrusions 30 that protrude further than the top surface 200 A and the undersurface 201 A of the first split component 2 A are formed. Moreover, the annular protrusions 30 that protrude further than the top surface 200 B and the undersurface 201 B of the second split component 2 B are formed.
  • the configuration of the gasket 1 is limited to neither the above-mentioned configuration nor the illustrated configuration.
  • the first split component 2 A and the second split component 2 B are not limited to components formed by stamping a metal sheet.
  • the first split component 2 A and the second split component 2 B may be formed of not a metal material but a rigid resin material.
  • the number of split components forming the core body 2 is not limited to two, either.
  • the core body 2 may include three or more split components.
  • one end of the first split component 2 A in the longitudinal direction and one end of the second split component 2 B in the longitudinal direction may form the first mating portion 21 A and the second mating portion 21 B via a gap, whereas the other end of the first split component 2 A in the longitudinal direction and the other end of the second split component 2 B in the longitudinal direction may not be in contact with each other.
  • the other end of the first split component 2 A in the longitudinal direction and the other end of the second split component 2 B in the longitudinal direction are not configured as mating portions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
US18/093,898 2022-01-12 2023-01-06 Gasket Pending US20230220914A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022003356A JP2023102693A (ja) 2022-01-12 2022-01-12 ガスケット
JP2022-003356 2022-01-12

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